What's in CITY OF FAIRFIELD's water?
CITY OF FAIRFIELD has at least one health-based violation EPA's ECHO database still lists as unaddressed - the required fix has not been reported complete. It serves 120,377 people through 32,910 service connections.
CITY OF FAIRFIELD's record against the rest of the country
Out of 12,903 systems in this dataset, CITY OF FAIRFIELD ranks 6,833th by violation burden (47th percentile) - 5 violations total, 2 health-baseds.
How CITY OF FAIRFIELD compares within CA
Among the 803 CA systems in this dataset, the average is 5.8 health-based violations - CITY OF FAIRFIELD's 2 is at or below that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for CITY OF FAIRFIELD is from 2025-05-10 (health-based: 2025-05-10). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
CITY OF FAIRFIELD's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Lead & copper - flagged from: LEAD AND COPPER RULE REVISIONS
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What this data is and is not
CITY OF FAIRFIELD's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Between the utility's meter and CITY OF FAIRFIELD's customers' taps is household plumbing, invisible to a system-level record ranked 6,833th of 12,903 by violation count. The guide to what this data misses covers that gap.